Instruction Manual

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028-2006 M:\1_BINDER\01_MICROSTAT\01_English\07_Manual\T266ME03.DOC 3/21/03

THERMOSTAT WITH:

•

DAMPER MOTOR VOLTAGE OUTPUT, 0 TO 10 Vdc

•

DAMPER POSITION MIN/MAX ADJUSTMENTS

•

2 MORE OUTPUTS

•

REVERSING OF DAMPER

•

DAY-NIGHT MODE ( T266 ONLY )

TO OPEN THERMOSTAT COVER

•

Remove security screw on left side of thermostat cover.

•

Open up by pulling on the left side of thermostat.

THERMOSTAT INSTALLATION

A) Location:

1- Shouldn’t be installed on outside wall.

2- Must be installed away from any heat source.

3- Shouldn’t be affected by direct sun radiation.

4- Nothing must restrain vertical air circulation to the thermostat.

B) Installation:

1- Pull out cables 6” out of the wall.

2- Wall surface must be flat and clean.

3- Separate the thermostat and the base by pulling cover on the left side (same

as the security screw.)

4- Insert cable in the central hole of the base.

5- Align the base and mark the location of the two mounting holes on the

wall.

6- Install shields in the wall.

7- Insert screws in mounting holes on each side of the base.

DO NOT OVERTIGHTEN!

8- Open the cable protection 1 1/4 inch more or less.

9- Strip each wire 1/4 inch.

10- Insert each wire according to wiring diagram.

11- Reinstall the cover ( right side first ).

12- Install security screw.

SETPOINT ADJUSTMENT KNOB LIMITATION

Note: To limit the rotation of setpoint knob, adjust setpoint to desired value, then

insert stoppers in appropriate holes.

Horizontal model:

S1,S10 = No limitation

S3 à S8 = Setpoint limitations

Vertical model:

S7,S10 = No limitation

S1 TO S7, OR S12: SETPOINT LIMITATIONS

REMOTE SENSOR

It is possible to use a remote sensor ( for duct or room application) by connecting it to

pins no. 6 and 7. Inside sensor must be disconnected by removing jumper J4 inside the

thermostat.

Characteristics of remote sensor 47 KΩ.

180.0 °F 82.2 °C 5.494 Kohm 0.553 Volts

170.0 °F 76.7 °C 6.585 Kohm 0.648 Volts

160.0 °F 71.1 °C 7.933 Kohm 0.761 Volts

150.0 °F 65.6 °C 9.610 Kohm 0.893 Volts

140.0 °F 60.0 °C 11.700 Kohm 1.047 Volts

130.0 °F 54.4 °C 14.342 Kohm 1.225 Volts

120.0 °F 48.9 °C 17.682 Kohm 1.429 Volts

110.0 °F 43.3 °C 21.940 Kohm 1.659 Volts

100.0 °F 37.8 °C 27.412 Kohm 1.914 Volts

90.0 °F 32.2 °C 34.483 Kohm 2.191 Volts

80.0 °F 26.7 °C 43.704 Kohm 2.486 Volts

70.0 °F 21.1 °C 55.834 Kohm 2.791 Volts

60.0 °F 15.6 °C 71.866 Kohm 3.096 Volts

50.0 °F 10.0 °C 93.340 Kohm 3.393 Volts

40.0 °F 4.4 °C 122.298 Kohm 3.673 Volts

30.0 °F -1.1 °C 161.670 Kohm 3.927 Volts

20.0 °F -6.7 °C 215.805 Kohm 4.150 Volts

10.0 °F -12.2 °C 291.100 Kohm 4.341 Volts

0.0 °F -17.8 °C 396.830 Kohm 4.499 Volts

NIGHT MODE

An external contact closing between terminals 6 and 8 activates night mode. A LED

on the thermostat flashes continuously indicating night mode. By pressing the button

on the thermostat, day mode is reactivated. The thermostat returns to night mode when

pressing again the button, or automatically after a 4 hours delay.

Note: Terminals 6 and 8 can be connected together between thermostats.

DAMPER CHANGEOVER INPUT

A) MANUAL CHANGEOVER (Code G = 1 or 2): Output 3 operates generally as

per selected mode on the order code (example: cooling, G = 1). When a contact closes

between terminals 6 and 9, output 3 changes its action (Example: heating). Terminals

6 and 9 can be connected together between thermostats.

Use a diode (Example: 1N4001) as indicated on the wiring diagram. Only one diode is

needed for all thermostats connected together.

Note: Terminals 6 and 9 can be connected together between thermostats.

B) AUTOMATIC CHANGEOVER (Code G = 3): Use a remote sensor (S60 or

S70) for each thermostat, upstream of the damper. This sensor can be calibrated ( ±

2.0 °C )at the thermostat if needed, using a small screwdriver on the right side of the

thermostat. Indicated temperature increases when rotating the potentiometer

clockwise.

When the supply temperature is below the setpoint, output 3 operates in cooling mode.

When the supply temperature is above the cooling setpoint (setpoint + co), output 3

operates in heating mode.

C) AUTOMATIC CHANGEOVER WITH RECIRCULATION (Code G = 4):

Damper operates as described above in B (automatic reversing), except that, when

supply air temperature is between heating and cooling setpoint for a period more than

25 seconds, damper opens 100 %.

DAMPER 0 TO 10 VDC OUTPUT

Output no 3 (terminal no. 10) produces a DC voltage 0 to 10 volts generally used for

damper control. Minimum value of damper or flow can be adjusted using the C263

programmer from 0 to 100 %. Adjust LL parameter to desired minimum position and

HL to maximum desired position. LL and HL are preprogrammed at 0 (0 volt) and

100% (10 volts) at the factory. Adjusting LL and HL does not affect the effective

proportional band. Example: LL=20%, HL=80%, Pb=0.9 °C. damper will modulate

from 20 to 80 % on a 0.9 °C proportional band.

Parameter HF is used to adjust the maximum value of damper or flow. This

parameter is active when damper is in cooling mode only. If adjusted to 0, the damper

position will remain at minimum (LL) on a heating demand. If adjusted at a value

higher than the LL value, the damper position will raise proportionally with the

heating demand, up to this maximum value.

SPECIFICATIONS

Operating Conditions: 0 °C to 50 °C ( 32 °F to 122 °F )

0% to 95% R.H. non-condensing

Sensor: Local 47 K NTC thermistor

Resolution: ± 0.1 °C ( ± 0.2 °F )

Control accuracy:

( calibrated )

± 0.2 ° C ( ± 0.4 °F ) for low ranges

± 0.9 ° C ( ± 1.8 °F ) for high ranges

Ranges:

10 °C to 32 °C ( 50 °F to 90 °F )

-18 °C to 82 °C ( 0 °F to 180 °F )

Outputs: Isolated Triac: 30 Vac at ½ A max.

0 to 10 Vdc into 2KΩ resistance min.

0 / 5 Vdc at 20 mA max. for both outputs.

Power: 24 Vac -15%, +10% 50/60 Hz; 2 VA

DIMENSIONS

180

135

VICONICS

114 mm

32 mm

( 71 mm )

2.8"

( 114 mm )

( 83 mm )

4.5"

1.275"

3.275"

COVER

SECURITY SCREW

OR FROM BACK

FROM TOP

WIRING

MODEL

VERTICAL

HORIZONTAL MODEL

BASE

ORDER CODE

T216 - AB - CD - EF - GH ( without day-night mode )

T266 - AB - CD - EF - GH ( with day-night mode )

Example: T266 - 52 - 11 - 12 - 30

One "SSR" 3-32 volts heating output

and one normally open thermal valve heating output.

Main sensor located inside the room. Setpoint adjustable by user.

Scale 50 °F to 90 °F. The output no. 3 is for a 0-10 volts dc damper motor.

The damper changeover is automatic according to supply sensor temperature. Night

setback is available.

Note: Order remote/changeover sensors separately.

T216

T266

Summary of content (2 pages)

PAGE 1
T216 T266 THERMOSTAT WITH: DAMPER MOTOR VOLTAGE OUTPUT, 0 TO 10 Vdc • DAMPER POSITION MIN/MAX ADJUSTMENTS • 2 MORE OUTPUTS • REVERSING OF DAMPER • DAY-NIGHT MODE ( T266 ONLY ) • TO OPEN THERMOSTAT COVER • • Remove security screw on left side of thermostat cover. Open up by pulling on the left side of thermostat. THERMOSTAT INSTALLATION A) B) Location: 1- Shouldn’t be installed on outside wall. 2- Must be installed away from any heat source. 3- Shouldn’t be affected by direct sun radiation.
PAGE 2
WIRING A Output no. 1 ( controlled device ) 0 Not installed Type 1 Relay, thermal relay, two position motor Isolated Triac 2 Normally open thermal valve Isolated Triac 3 Normally close thermal valve Isolated Triac 4 "SSR" with 24 Vac input Isolated Triac 5 "SSR" with 3-32 Vdc input Pulsed 0/5 Vdc 6 0 to 10 Vdc actuator, voltage relay or "SCR" * 0 to 10 Vdc B Output no.